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Wed, 05 Aug 2026 02:01:19 -0700 (PDT) Received: from google.com ([2a00:79e0:2031:6:8002:2a47:a704:5a58]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-38fedc650a0sm3967542a91.14.2026.08.05.02.01.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 05 Aug 2026 02:01:19 -0700 (PDT) Date: Wed, 5 Aug 2026 18:01:14 +0900 From: Sergey Senozhatsky To: Sergey Senozhatsky Cc: Barry Song , akpm@linux-foundation.org, bigeasy@linutronix.de, hdanton@sina.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, minchan@kernel.org, ryncsn@gmail.com, yosry.ahmed@linux.dev, surenb@google.com, Dongdong Zhang , Suleiman Souhlal Subject: Re: [RFC PATCH] zram: avoid preemption with CPU-based compression backends Message-ID: References: <20260805005545.66112-1-baohua@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On (26/08/05 17:46), Sergey Senozhatsky wrote: > On (26/08/05 15:50), Barry Song wrote: > This sounds interesting. I think all of the S/W backends that we use > have stateless decompression OK, that doesn't seem to be true, but just for initial testing on lzo/lz4 we can simply split the lock. zstd/deflate need context for decompression, this doesn't look stateless.